Coral-gravel storm ridges: examples from the tropical Pacific and Caribbean
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Abstract
Extreme storms in reef environments have long been recognized as a mechanism for depositing ridges of reef-derived coarse clastic sediment. This study revisits the storm ridges formed by Tropical Cyclone Bebe on Funafuti, Tuvalu and Tropical Cyclone Ofa on Upolu, Western Samoa in the South Pacific, and Hurricane Lenny on Bonaire, Netherlands Antilles in the Caribbean. Ridge characteristics produced by these storms include: heights of 1–4 m, widths of 8–50 m, and lengths up to 18 km. The ridges tend to be higher and steeper on their landward margins than on their seaward margins and are composed mostly of re-worked coral rubble derived from reef front settings with smaller amounts of fresh broken coral (5–30%). Characteristics of these modern gravel storm ridges can be used to help identify ancient storm deposits and to differentiate between other coarse-grained deposits such as those created by tsunamis.
Suggested Citation
Richmond, B.M., Morton, R., 2007, Coral-gravel storm ridges: examples from the tropical Pacific and Caribbean, in Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 572-583, https://doi.org/10.1061/40926(239)43.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Coral-gravel storm ridges: examples from the tropical Pacific and Caribbean |
| ISBN | 0784409269; 9780784409268 |
| DOI | 10.1061/40926(239)43 |
| Publication Date | April 26, 2012 |
| Year Published | 2007 |
| Language | English |
| Publisher | American Society of Civil Engineers |
| Contributing office(s) | Coastal and Marine Geology Program |
| Description | 12 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes |
| First page | 572 |
| Last page | 583 |
| Conference Title | 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes |
| Conference Location | New Orleans, LA |